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Protein Name: S-phase kinase-associated protein 2

UniprotKB/SwissProt ID: SKP2_HUMAN (Q13309)

Gene Name: SKP2

Synonyms: FBXL1

Organism: Homo sapiens (Human).

Function: Substrate recognition component of a SCF (SKP1-CUL1-F- box protein) E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of target proteins involved in cell cycle progression, signal transduction and transcription. Specifically recognizes phosphorylated CDKN1B/p27kip and is involved in regulation of G1/S transition. Degradation of CDKN1B/p27kip also requires CKS1. Recognizes target proteins ORC1, CDT1, RBL2, KMT2A/MLL1, CDK9, RAG2, FOXO1, UBP43, and probably MYC, TOB1 and TAL1. Degradation of TAL1 also requires STUB1. Recognizes CDKN1A in association with CCNE1 or CCNE2 and CDK2. Promotes ubiquitination and destruction of CDH1 in a CK1-Dependent Manner, thereby regulating cell migration.

Other Modifications: View all modification sites in dbPTM

Protein Subcellular Localization: Cytoplasm. Nucleus.

PDB :
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Graphical Visualization of Ubiquitination Sites:
Overview of Protein Ubiquitination Sites with Functional and Structural Information
InterPro ID Domain
IPR001611
IPR001810


The ubiquitination sites of SKP2_HUMAN

No. Position Ubiquitinated Peptide Secondary Structure Solvent Accessibility Substrate Motifs PubMed ID
1145TLDLTG K NLHPDV CCCHHH H HHHHHH 51.61%21890473
2228IVNTLA K NSNLVR HHHHHH C CCCCCE 65.11%2190698

The interacting network mediated by proteins: SKP2_HUMAN

Metabolic pathway:
Kegg map ID Pathway
map03008Ribosome biogenesis in eukaryotes